mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/hwtracing/stm/stm.h
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@@ -10,23 +10,20 @@
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 #ifndef _STM_STM_H_
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 #define _STM_STM_H_
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+#include <linux/configfs.h>
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+
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 struct stp_policy;
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 struct stp_policy_node;
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+struct stm_protocol_driver;
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-struct stp_policy_node *
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-stp_policy_node_lookup(struct stm_device *stm, char *s);
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-void stp_policy_node_put(struct stp_policy_node *policy_node);
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-void stp_policy_unbind(struct stp_policy *policy);
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-
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-void stp_policy_node_get_ranges(struct stp_policy_node *policy_node,
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-				unsigned int *mstart, unsigned int *mend,
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-				unsigned int *cstart, unsigned int *cend);
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 int stp_configfs_init(void);
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 void stp_configfs_exit(void);
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+void *stp_policy_node_priv(struct stp_policy_node *pn);
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+
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 struct stp_master {
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 	unsigned int	nr_free;
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-	unsigned long	chan_map[0];
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+	unsigned long	chan_map[];
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 };
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 struct stm_device {
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@@ -40,24 +37,39 @@
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 	struct mutex		link_mutex;
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 	spinlock_t		link_lock;
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 	struct list_head	link_list;
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+	/* framing protocol in use */
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+	const struct stm_protocol_driver	*pdrv;
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+	const struct config_item_type		*pdrv_node_type;
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 	/* master allocation */
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 	spinlock_t		mc_lock;
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-	struct stp_master	*masters[0];
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+	struct stp_master	*masters[];
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 };
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 #define to_stm_device(_d)				\
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 	container_of((_d), struct stm_device, dev)
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+
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+struct stp_policy_node *
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+stp_policy_node_lookup(struct stm_device *stm, char *s);
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+void stp_policy_node_put(struct stp_policy_node *policy_node);
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+void stp_policy_unbind(struct stp_policy *policy);
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+
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+void stp_policy_node_get_ranges(struct stp_policy_node *policy_node,
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+				unsigned int *mstart, unsigned int *mend,
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+				unsigned int *cstart, unsigned int *cend);
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+
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+const struct config_item_type *
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+get_policy_node_type(struct configfs_attribute **attrs);
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 struct stm_output {
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 	spinlock_t		lock;
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 	unsigned int		master;
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 	unsigned int		channel;
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 	unsigned int		nr_chans;
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+	void			*pdrv_private;
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 };
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 struct stm_file {
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 	struct stm_device	*stm;
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-	struct stp_policy_node	*policy_node;
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 	struct stm_output	output;
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 };
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@@ -71,11 +83,35 @@
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 	struct stm_device __rcu	*link;
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 	struct list_head	link_entry;
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 	/* one output per stm_source device */
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-	struct stp_policy_node	*policy_node;
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 	struct stm_output	output;
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 };
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 #define to_stm_source_device(_d)				\
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 	container_of((_d), struct stm_source_device, dev)
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+void *to_pdrv_policy_node(struct config_item *item);
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+
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+struct stm_protocol_driver {
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+	struct module	*owner;
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+	const char	*name;
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+	ssize_t		(*write)(struct stm_data *data,
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+				 struct stm_output *output, unsigned int chan,
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+				 const char *buf, size_t count);
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+	void		(*policy_node_init)(void *arg);
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+	int		(*output_open)(void *priv, struct stm_output *output);
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+	void		(*output_close)(struct stm_output *output);
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+	ssize_t		priv_sz;
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+	struct configfs_attribute	**policy_attr;
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+};
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+
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+int stm_register_protocol(const struct stm_protocol_driver *pdrv);
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+void stm_unregister_protocol(const struct stm_protocol_driver *pdrv);
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+int stm_lookup_protocol(const char *name,
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+			const struct stm_protocol_driver **pdrv,
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+			const struct config_item_type **type);
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+void stm_put_protocol(const struct stm_protocol_driver *pdrv);
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+ssize_t stm_data_write(struct stm_data *data, unsigned int m,
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+		       unsigned int c, bool ts_first, const void *buf,
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+		       size_t count);
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+
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 #endif /* _STM_STM_H_ */